Response of Prickly Sida and Soybeans to Various Herbicides

Jeffery, L. S.; Connell, John A.; McCutchen, Tom; Overton, J. R.

doi:10.1017/s0043174500065759

Cited by 4 publications

(6 citation statements)

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“…Forty pitted morningglory plants/m 2 reduced 20-cm-row soybean yield by 80% (Howe and Oliver 1987). Prickly sida, which is relatively less competitive with soybean, caused 9 to 14% yield loss (Jeffery et al 1976). Each of these weeds can cause significant yield loss in soybean on their own.…”

Section: Introductionmentioning

confidence: 99%

Weed Control Programs in Drilled Glyphosate-Resistant Soybean¹

Payne¹,

Oliver²

2000

Weed Technology

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Field studies were conducted in 19-cm-row soybean during 1997 and 1998 to evaluate the rate and timing of glyphosate applications applied alone at 0.42 and 0.63 kg ae/ha and with other herbicides to glyphosate-resistant soybean in terms of weed control, soybean yield, and net return. Weed species included barnyardgrass, hemp sesbania, pitted morningglory, and prickly sida. Among glyphosate-alone weed control programs, sequential applications generally provided the highest and most consistent control of all species evaluated (above 90% for broadleaf species). Glyphosate applied in combination with selective postemergence (POST) herbicides or following soil-applied herbicides controlled most species comparable to sequential glyphosate applications. Most herbicide programs, except for single glyphosate applications, were comparable to sequential glyphosate applications in terms of soybean yield and net return and ranged from 2,221 to 2,827 kg/ha and $410.28 to $549.60/ha. Depending on the year, either one or two glyphosate applications were needed for adequate weed control in programs with a soil-applied herbicide. Glyphosate rate affected neither weed control, yield, nor net return. Depending on a producer's management style and weed spectrum, weed control programs with glyphosate alone, in combination with another POST herbicide, or following soil-applied herbicides are all viable options in drilled glyphosate-resistant soybean.

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Section: Introductionmentioning

confidence: 99%

Weed Control Programs in Drilled Glyphosate-Resistant Soybean¹

Payne¹,

Oliver²

2000

Weed Technology

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“…Prickly sida, entireleaf and pitted momingglory, and sicklepod reduce soybean yield (3,4,5,9,14) and can be difficult to control with many herbicides applied POST (9,16,17). Chlorimuron is a sulfonylurea herbi cide registered for use in soybean to selectively control many troublesome broadleaf weeds, including sicklepod…”

Section: Introductionmentioning

confidence: 99%

Weed Control in Soybean (Glycine max) with Lactofen Plus Chlorimuron

Vidrine¹,

Reynolds²,

Griffin³

1993

Weed technol.

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Field experiments were conducted over a 3-yr period at three locations to evaluate lactofen at rates of 110 to 220 g ai ha−1applied POST in combination with chlorimuron at 9 g ae ha−1for weed control in soybean. At St. Joseph in 1989 and Baton Rouge in 1990, lactofen at 110, 150, and 170 g ha−1in combination with chlorimuron controlled prickly sida (3 to 5 cm) and entireleaf and pitted morningglory (5 to 13 cm) comparable with the full rate of lactofen at 220 g ha−1plus chlorimuron and the standard treatment of acifluorfen at 280 g ae ha−1plus bentazon at 560 g ae ha−1. Entireleaf morningglory and sicklepod control at Alexandria with lactofen at 110 to 170 g ha−1plus chlorimuron was comparable with that from the full rate of lactofen plus chlorimuron and better than with acifluorfen plus bentazon. Weed control was reduced when soil moisture was deficient at treatment time or when prickly sida height was more than 5 cm and entireleaf morningglory, pitted morningglory, and sicklepod more than 15 cm. In related studies at St. Joseph, a reduced rate of lactofen (170 g ha−1) in combination with chlorimuron controlled prickly sida 98%, pitted morningglory 93%, and entireleaf morningglory 90% in 1988, which was comparable with the control from the full rate of lactofen plus chlorimuron and with acifluorfen plus bentazon.

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“…In the Pre‐plant Herbicide Study discussed previously, treatments most effective on prickly sida were those containing flumioxazin and in particular flumioxazin plus chlorimuron‐ethyl plus thifensulfuron‐methyl (Table 4), the same herbicides and rates evaluated at‐planting in the Pre‐plant, At‐Planting, and POST Program Study (Table 6). Other research has shown 89–98% residual control of prickly sida from PRE application of flumioxazin (Burke et al., 2002), cloransulam and cloransulam plus metribuzin (Barnes & Oliver, 2004), sulfentrazone (Vidrine et al., 1996), and linuron (Jeffery et al., 1976).…”

Section: Resultsmentioning

confidence: 96%

“…Similarly, a survey conducted in Arkansas in 2012, reported that prickly sida was present in approximately 36% of the sampled sites in the eastern Mississippi Delta area (Korres et al., 2015). Prickly sida densities of 50 to 120 plants m −2 are capable of reducing soybean yield 9–14% (Jeffery et al., 1976).…”

Section: Introductionmentioning

confidence: 99%

“…Effective control of prickly sida has been achieved in soybean using preemergence (PRE) herbicides (Askew et al., 1999; Barnes & Oliver, 2004; Burke et al., 2002; Culpepper et al., 2000; Green et al., 1988; Jeffery et al., 1976; Reddy, 2000; Vidrine et al., 1996) or using a POST herbicide following a PRE treatment (Askewet al., 1999; Jeffery et al., 1976; Vidrine et al., 1996).…”

Section: Introductionmentioning

confidence: 99%

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Pre‐plant and in‐crop herbicide programs for prickly sida control in soybean

Copes

Miller

Godara

et al. 2021

Crop Forage & Turfgrass Mgmt

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Prickly sida (Sida spinosa L.) is emerging as a prevalent and troublesome weed in the Mid-South glyphosate-resistant (GR) soybean [Glycine max (L.) Merr.] cropping systems as reliance on residual herbicides has decreased. It emerges throughout the growing season and postemergence (POST) control has been reported to be variable. Combinations of residual herbicides applied pre-plant and at-planting followed by POST herbicides in-crop may be needed to maximize control. This research utilized separate studies to address the value of currently available residual herbicides applied pre-plant, at-planting, and POST in glyphosate-resistant soybean prickly sida management systems. At 35 days after application (DAA), prickly sida control from glyphosate plus 2,4-D pre-plant with flumioxazin plus chlorimuron-ethyl, flumioxazin plus pyroxasulfone, flumioxazin plus chlorimuron-ethyl plus thifensulfuronmethyl, metribuzin plus chlorimuron-ethyl or metribuzin plus sulfentrazone was 70-89% and similar among treatments. In a separate study, based on prickly sida control and density 21 days after late postemergence (LPOST) application, improvement in control was most affected by inclusion of glyphosate or glyphosate plus residual herbicides flumioxazin, chlorimuron-ethyl, and thifensulfuron-methyl at-planting.Weed control was not improved when residual herbicides chlorimuron-ethyl plus tribenuron-methyl were included pre-plant or when residual herbicides chlorimuronethyl, s-metolachlor, and fomesafen were applied with glyphosate POST. Late-season prickly sida control was as high as 93% following at-planting and POST applications that did not include residual herbicides. Soybean yield was maximized with glyphosate applied both at-planting and POST, whether or not residual herbicides flumioxazin, chlorimuron-ethyl, and thifensulfuron-methyl were included at-planting or residual herbicides chlorimuron-ethyl, s-metolachlor, or fomesafen were included POST. When averaged across at-planting and POST treatments, a 10% yield increase was observed when residual herbicides chlorimuron-ethyl and tribenuron-methyl were applied with glyphosate plus 2,4-D pre-plant compared with glyphosate plus 2,4-D alone.

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Response of Prickly Sida and Soybeans to Various Herbicides

Cited by 4 publications

References 1 publication

Weed Control Programs in Drilled Glyphosate-Resistant Soybean¹

Weed Control Programs in Drilled Glyphosate-Resistant Soybean¹

Weed Control in Soybean (Glycine max) with Lactofen Plus Chlorimuron

Pre‐plant and in‐crop herbicide programs for prickly sida control in soybean

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Response of Prickly Sida and Soybeans to Various Herbicides

Cited by 4 publications

References 1 publication

Weed Control Programs in Drilled Glyphosate-Resistant Soybean1

Weed Control Programs in Drilled Glyphosate-Resistant Soybean1

Weed Control in Soybean (Glycine max) with Lactofen Plus Chlorimuron

Pre‐plant and in‐crop herbicide programs for prickly sida control in soybean

Contact Info

Product

Resources

About

Weed Control Programs in Drilled Glyphosate-Resistant Soybean¹

Weed Control Programs in Drilled Glyphosate-Resistant Soybean¹